Fuel vapor and air mixer



Dec. 15, 1936. w. e. SHAVER E1- AL; 2,064,693

I FUEL VAPOR AND AIR MIXER Filed Nov. 1, 1934 I/d/zer 61 5/74V6l Jo/m '6Farmer INVENTORS ATTORNEY Patented Dec. 15, 1936 UNITED STATES FUELVAPOR AND AIR MIXER Walter G. Shaver, Bellerose Manor, and John G.

Farner, Elmont, N. Y.v ll

Application November 1, 1934, Serial No. 751,054 x 2 Claims.

This invention relates to combustion fuel vapor and air mixers and moreparticularly to auxiliary devices operating in conjunction with thecarburetor of internal combustion engines.

It is the primary object of our invention to provide a carburetorsupplementary device by which the more thorough and economicalvaporization of the combustion fuel will be effected.

A further object of our invention is to provide in a device of thecharacter described a simple and rugged construction which permits ofthe convenient attachment of same to an internal combustion enginescarburetion system.

A more specific object of our invention is to provide an auxiliarydevice for attachment onto a carburetor by which air is injected intothe va-' porized fuel stream to reflect the more efficient andeconomical operation of the combustion engine in various atmosphericconditions.

The invention will be fully and comprehensively understood from aconsideration of the following detailed description when read inconnection with the accompanying drawing which forms part of theapplication, with the understanding, however, that the improvement iscapable of extended application and is not confined to the exact showingof the drawing nor to the precise construction described and, therefore,such changes and modifications may be made therein as do not affect thespirit of the invention nor exceed the scope thereof as expressed in theappended claims.

In the drawing:

Fig. 1 is a perspective view illustrating the application of our devicein the carburetion system of an engine.

Fig. 2 is a top elevational view of our device.

Fig. 3 is a central sectional view on line 3-3 of Fig. 2; and

Fig. 4 is a transverse sectional view on line 44 of Fig. 2.

Referring now to the drawing for a more detailed description thereof,the numeral 5 indicates in general our auxiliary gas vaporizer which inoutline resembles the usual gasket and is therefore adapted to beinstalled as illustrated in Fig. 1 between the fianges connecting thecarburetor to the manifold. In this figure the numeral 6 indicates thecarburetor or similar device for vaporizing the combustion fuel which isconnected thru our auxiliary device 5 to the usual intake manifold l bywhich the vaporized fuel is delivered to the respective cylinders of aninternal combustion engine, not shown.

Our auxiliary mixing device 5 comprises a center ring 8'; theends'of'which form shoulders 9 to facilitate the placement of a pair ofplates H! on same, the outer surface of plates lllbeing fiush with theendsof the ring 8. The outline of'plates i is in confo'rmity to theshape of the connectingfianges of the carburetor 6 and the manifold l. Aspacer member II, also conforming in outline to the plates I0, anddisposed between same to hold the plates H) in parallelism with eachother, is provided. The members 8, IE! and El are securely held togetherby a pair of ferrules l2, the ends of which are flanged over againstplates ill. The ferrules [2 form bolt holes and are so disposed as topermit the insertion of the fastening bolts l3 in Fig. 1 thru same. Thespacer memher I! is provided with a centrally disposed aperature Hi of alarger diameter than the periphery of center ring 8 by which toformbetween the plates In an annular chamber l entirely surrounding thecenter ring, 8. The chamber l5 communicates to the periphery of thespacer member H thru an aperture I6 formed in same. A plurality of jetsI! are provided in the annular wall of center ring 8 by which thechamber 15 communicates at various points to the interior of the centerring 8. The jets l1 comprise small apertures terminating on the interiorof center ring 8 and disposed radially in same and are counterbored attheir ends which terminate in the chamber l5. It will be noted fromFigs. 3 and 4 that there are two sets or circular series of jets I1, oneset being above the other, and that the jets of each set are staggeredrelative to the jets of the other set. We have found that by providing aplurality of sets or series of jets, one above or beyond'the other,better results are obtained, and still better results are had bystaggering the jets of the different series.

In the operation of our device the carburetor 6 functions as usual bythe suction or vacuum created in the intake manifold 1 by the operationof the internal combustion engine. The vaporized fuel issuing from thecarburetor passes up thru our auxiliary vaporizer device 5. The suctioncreated in the manifold 1 causes air to be injected into the apertureI6, thru the chamber [5, and thence into the vaporized fuel stream viathe jets I! which are so disposed in the periphery of the ring 8 as toinject the atmospheric air transversely of the fuel stream at anappreciable velocity due to the comparative size of the jets IT. Thisvelocity effects a turbulent action of.

the fuel stream, thus causing a complete mixture of the injected-airwith same. The atmospheric air circulating thru the chamber I5 ispreheated by its contact with the walls of the chamber, the latter beingheated by conduction from parts of the motor operating under highertemperatures. In this manner the more economical and efficient operationof an internal combustion engine is effected by causing a more lean fuelmixture to be delivered to the engine than is otherwise possible withthe usual carburetor.

Extensive experiments on the device as just described have been carriedout in practice on a number of gasoline propelled cars of various makes.The results have demonstrated conclusively that our auxiliary vaporizerefiects substantial economies in the consumption of fuel.

We have found that, by using the device of our invention, there is lessdeposition of carbon and that what carbon is deposited is in relativelyloose condition and not hard, as usual, so that it is earily removed.

What is claimed as new is:

1. A fuel vapor and air mixer of the character described, comprising acentral ring having shoulder portions formed therein, a pair of platespositioned within said shoulder portions and lying flush with the endsof said ring, a spacer member interposed between said pair of plates andhaving a centrally disposed aperture to provide an annular chamber,means for admitting atmospheric air to said chamber, said annularchamber being provided with a plurality of ports and arranged in atleast two vertically-spaced planes, said ports in any one plane beingdiametrically opposite and reduced in size to a jet for deliveringatmospheric air into the mixture chamber.

2. A fuel vapor and air mixer of the character described, comprising acentral ring having means for supporting a pair of plates thereinadapted to lie flush with the ends of said ring, a spacer memberinterposed between said pair of plates and having a centrally disposedaperture to provide an annular chamber, said ring being provided with aplurality of ports communicating with said central chamber, said portsbeing in staggered relation in respect to a horizontal plane and reducedin size to a jet for delivering air into a mixture chamber.

WALTER G. SHAVER. JOHN C. FARNER.

